In the following question, two statements are numbered as I and II. On solving these statements, we get quantities I and II respectively. Solve both quantities and choose the correct option. Two persons, Pawan and Shyam together can complete a piece of work in 50 days. The efficiency of Pawan is 25% more than that of Shyam.

Quantity I: If Pawan works at 20% of his efficiency then how many days will he take to complete (1/5) of the work?

Quantity II: If Shyam works at 50% of his efficiency then how many days will he take to complete half of the work?